Carbonating apparatus.



E. E. MURPHY.

CARBONATING APPARATUS.

APPLICATION FILED MAY 5. 19H. 1 72,298. Patented July 9, 191's.

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i AQ'I'EIRNEyS E EL'MURPHY.

CARBONATING APPARATUS.

APPLICATION FILED MAY 5. 1911.

Patented July 9, 1918.

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E. E. MURPHY.

OARBONATING APPARATUS.

APPLICATION FILED HAYS, 191?.

1,272,298. Patnted 1111 1918.

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INVENTZI R URN rzys 'rnrnnr orrren.

E. MURPHY, 03E WINCHESTER, MASSACHUSETTS.

cennoimrrne errene'rus.

Specification of Letters Patent.

Application'filed May 5, 1917. Serial No. 163,732.

To aZZ whom it may concern..-

, Be it known that I, EDWARD E. MURPHY, a citizen of the United States, residing at Winchester, in the county of liliddlesex and State of Massachusetts, have invented new and useful improvements in Carbonating' Apparatus, of which the following is a specification.-

r This invention relates to apparatus for charging water, or other liquid, with carbonic acid, or other gas, preparatory to dispensing the charged or carbonated liquid, the liquid and gasbeing forced under pressure into a tank in which the liquid is charged, and from which it is dispensed.

The invention has for its object, first, to automatically maintain a practically uniform predetermined pressure in the tank by discontinuing the supply of water to the tank when the gas pressure therein rises toa predetermined degree, and resuming the supply when the gas pressure is reduced.

Another object of the invention is to simultaneously control the supply of both liquid and gas to the tank, the supply of both liquid and gas being automatically discontinued when the pressure rises, and resumed when the pressure is reduced.

To the above-mentioned ends the invention is embodied in the improvements WlllCh T will now proceed to describe and claim.

Of the accompanying drawings forming a part of this-specification,

Figurel is a side elevation of a carbonating apparatus embodying my invention. Fig. 2 s an elevation of a portion of theapparatus shown by Fig. 1, viewed fiom-a different point.

Fig. 3 is a section on line 33 of 2.

Fig. 3 is a view similar to a portion of Fig. 3, showing the gas valve opened. Fig. 4 is a diagram illustration of the circuit, which includes the electric motor and a switch, hereinafter described.

Fig. 5 is a view partly in section, illustrating a somewhat difierent embodiment of the invention.

Fig. 6 is a section on and abovethe line 66 of Fig. 5.

Fig.7 is a side elevation, representing a complete carbonating' apparatus, including the embodiment shown by Figs. 5 and 6.

The same reference characters indicate the same parts in all of the figures.

12 represents a carbonating tank having means at its upper end for engagement with a pipe line 13, connected with a pump 1 Patented m a. rare.

livered to the bottom of the tank from asuitable source of supply, under pressure, through a gas conduit including a pipe line 7.

In accordance with my invention, T provide controlling means actuated or governed by gas pressure in the tank for stopping the motor and pump when the pressure rises to a predetermined degree, and, starting the motor and pump when the-pressure is reduced, the tank being provided with a con trol conduit 11, communicating with its bottom, through which water may be displaced from the tank by gas pressure on the water in the tank. to a point outsidethe tank where th displaced water acts on motorstarting and stopping means, as hereinafter described. I

In the preferred embodiment of the invention, shown by Figs. 1, 2, and 3, the gas conduit also includes a pipe line 18, and a casing 19 having oppositely projecting threaded nipples 20 and 21, engaged respectively with the pipe lines 17 and 18, the ducts 22 and 23 of said nipples being out of alinement with each other, as shown by Fig. 3. The casing 19 contains a valve chamber 19, one side of which has an annular valve seat 24 surrounding a passage 19. The duct 23 communicates with the valve chamber19 and the duct 22 communicates with the passage 19. A gas valve 25 is normally held against said seat by a spring 26, and hasa stem compermit gas to flow from one duct to the other when the valve 25 is opened, and a cylindrical portion 29 having a gas tight sliding fit in a stufling-box 30 formlng a part ofthe passage 19*. The casing 19 is extended to form a diaphragm chamber composed of sections 31, 32, between which is clamped a flexible diaphragm 33 attached by a screw 34 to a plunger 35 which is movable in a guide 36 and is normally depressed by a spring 37 in said guide, the pressure of said spring being adjustable by means of a screw 38 and a spring abutment 39 (Fig. 2).

A lever 40 fulcrumed at .41 on the guide 36, passes through a slot 42 in the plunger tion adapted to contact with the gas valve .35 and is connected therewith by a pivotmay be of the well known Cutler-Hammer construction. An upward movement of the lever opens the switch to break the circuit and stop the motor and pump, while a downward movement closes the switch to close the circuit and start the .motor and pump. The head 34 of the screw 34' constitutes a projecstem portion 29 and open the valve 25, when the plunger and diaphragm are depressed. The control conduit 11, which is preferably a pipe line including separably connected sections, as shown by Figs. 1 and 2, communicates with the chamber 31 below the diaphragm 33, as shown by Fig. 3. When the gas pressure rises in the tank water is forcibly displaced by the gas pressure, and is forced through the control conduit against the diaphragm and raises the latter and the plunger 35, thus raising the lever 40 and breaking the motor circuit. When the pressure is reduced the spring 37 acts to depress the plunger and lever and close the circuit. 'Other means, such as a weight, may be employed as a yielding pressure device to yieldingly depress the plunger. It will now be seen that provision is made for automatically discontinuing .the supply of water when the gas pressure in the tank rises to a predetermined degree, and resuming the supply of water when the gas pressure is reduced by the withdrawal of carbonated water at the outlet 16,- and by absorption of gas by the water in the tank.

The supply of gas to the tank is automatically discontinued by the closi of the gas valve 25 by its spring 26 Qfii n the diaphragm and plunger are rais d, and is automatically resumed when the valve is opened by the spring 37, which acts to depress the plunger and diaphragm, and open the gas valve, asshown by Fig. 3, the projection 34 in descending, contacting withthe valve stem portion 29. Provision is therefore made for simultaneously controlling the supply of water and gas to the tank. The control conduit 11 is preferably provided with an extension 11 communicating with the casing 11", of a pressure gage.

In theembodimentof the invention shoiwnby Figs. 5, 6, and 7, the supplyof gas to-the, tank is not automatically controlled by the means above described, The supply of water is however automatically controlled by gas pressure in the tank. In the last-mentioned embodiment a control conduit 48 extends from the bottom of the tank to a nipple 49 on a-diaphragm chamber 50, the gas conduit 17 being entirely independent.

The gas conduit 17 in each embodiment of the invention is provided with a valve seat part of the gas conduit, and perforated at:

its upper end, the tank.

The adjusting screw 38 and spring abutment 39 constitute a means for varying-the resistance of the spring 37 to displacement of the diaphragm by the gas pressure in the tank, and therefore determining the degree of gas pressure required to start the pump.

The control conduit 11 constitutes an ele-. ment of tank-pressure-regulating means controlled by variations of gas pressure in the tank to render the pump inoperative when the tank pressure rises, and cause the operation of the pump when the tank pressure is reduced. Said control conduit may cooperate with any suitable movable member equivalent to the diaphragm 33, which is distributes the gas entering movable in one direction by fluid pressure,

by said independent yielding pressure device to start the pump.

It will now be seen that the pressure of gas in the tank acting on the water in the tank to displace some of'the water into the control conduit, stops the pump, and that an independent yielding pressure device starts the pump. The described operationis not dependent on the height and weight of a body of water in the tank, and there is no liability of the there is not su cient gas in the tank 'to properly impregnate the water. The (lia- -phragm 33 and spring 37 maybe located in any desired position relatively to the tank, and may be located at any-height above the tank to which water may be displaced therefore beconvenientlylocated ina limitedspace, in the OOOlQIg'Of: a" soda fountain,

ump being stopped when through the control conduit. The tank may a ling means shown by the drawings is unii'nportant, and is thus shown only for convenience, the tank and the controlling means being connected only by the conduits ii and 17 (Fig. 1), or by the conduit 4:8 in Fig. 5. These conduits may obviously be of any length desired.

As implied in the foregoing description and in the following claims, 1 am not limited to the Specific mechanism of the embodiments oi-my improvements shown by the drawings, except as otherwise required in certain of the more limited claims.

I claim: I 1. in carbonating apparatus, in combination, a carbonating tank, a motor-driven pump connected with the tank to supply liquid thereto, means for delivering gas under pressure to the tank, and controlling means actuated by variations of gas pressure in the tank to stop the pump when the gas pressure rises, and start the pump whenthe gas pressure is lowered, said controlling means including a member movable in one direction by an increase of gas pressure in the tank to stop the pump, and

a yielding pressure device, independent of the tank, for moving the said member in the opposite direction to start the pump.

2. ln carbonating apparatus, in combination, a carbonating' tank, a motor-driven pump connected with the tank to supply quid thereto, a gas conduit connected with the tank to deliver'gas under pressure thereto, a gas valve in said conduit, and controlling mechanism actuated by variations of gas pressure in the tank and adapted tosimultaneously stop the pump and close said valve whenthe' gas pressure rises, and to simultaneously start the pump and open said valve when the gas pressure is lowered, said controll' means including a. member connected with the gas valve and movable in one direction by an increase of gas pressure in the tankto stop the pump and close the gas valve, and a 'elding pressure device, independent of glie tank, for moving said member in the opposite direction to start the pump and open the gas valve.

3.111 carbonating apparatus, in combination, a carbonating tank, means for delivering gas under pressure thereto, a pump connected with the tank to supply liquid thereto, an electric motor for said-pump, and controlling means actuated by variations of gas pressure in the tank and ineluding a switch in circuit with the motor,

a member connected with theswitch and movable in one directlon by a rise of gas pressure to'break the circuit and stop the pum and a yielding pressure device, indepen ent of the tank, for moving said memher in the opposite direction to close the ci cuit and start the pump when the gas pressure is lowered.

4. In carbonating apparatus, in combinamove said member in the opposite direction and thereby close the circuit and start the pump when the gas pressure is lowered.

5. ln carbonating apparatus, in combination, a carbonating tank, means for delivering gas under pressure thereto, a pump connected with the tank to supply liquid thereto, an electric motor for said pump, and controlling means actuated by variations of gas pressure in the tank and including a switch in circuit with the motor, a member connected with the switch and movable in one direction by a rise of gas pressure in the tank to break the circuit and stop the pump, a spring adapted to move said member in the opposite direction and thereby close the circuit and start the pump when the gas pressure is lowered, and means for regulating the force of said spring to vary the degree of gas pressure required to start the pump; Y

apparatus, in combinaan 6. In carbonating tion, a carbonating t means for delivering gas under pressure thereto, a pump cou-' nected with the tank to supply liquid thereto, an electric motor for said pump, and controlling means actuated by variations of gas pressure in the tank and including a control conduit communicating with the bottom of the tank to receive liquid forced therefrom .by gas pressure, a member mov-- able in one direction by displaced liquid forced from the tank to stop the pump, a yielding pressure device, independent of the tank, for moving said member in the opposure in the tank and including a control conduit communicating with the bottom of the tank to receive liquid forced therefrom by gas pressure, a casing comprising a diaphragm chamber communicating with, the control conduit, a diaphragm in the diaphragm chamber movable in one direction by displaced liquid forced from the tank to stop the pump, a plunger supported by I regulating means controlled by variations L said diaphragm, a spring exertin pressure onsaid plunger to move the diap ragm in the opposite direction to start the pump, a switch in circult with .the pump motor, and operating connections between said plunger and switch.

8. In carbonating apparatus, in combination, a carbonating tank, a gas conduit connected therewith, a pump connected with the tank to supply liquid thereto, an electric motor for said pump, and tank-pressureof pressure in the tank and including a concommunicating with the valve chamber and the other with said assage, a spring-closed gas valve in the va ve-chamber adapted to 7 close said passage and provided with a stemextending through said passage into the diaphragm chamber, a portionof said stem'being formed to permit a flow of gas through a portion of said passage, and another portion being packed by said stuffing-box to form a gas-tight joint, a diaphragm in the diaphragm chamber, a spring-pressed plunger supported by said diaphragm and havmg a projection adapted to contact with said stem and 0 en the gas valve, a switch in circuit with t e pump motor, and operating connections between the said plunger and switch.

In testimony whereof I have aflixed my' signature.

- EDWARD E. MURPHY. 

